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EdaSmart ESP32 Firmware

Kode ini adalah firmware untuk ESP32 yang mengendalikan:

  • Mesin Press (naik/turun/tahan dengan limit switch & sonar HC-SR04)
  • Mesin Penggiling (timer + RPM via Hall Effect sensor)
  • LCD 20×4 I2C sebagai UI utama
  • PCF8574 untuk ekspansi I/O (tombol & limit switch)
  • MQTT over TLS ke HiveMQ Cloud
  • OTA firmware update via Access Point

Struktur File

edasmart_esp32/
├── edasmart_esp32.ino   ← kode utama Arduino
├── config.h             ← konfigurasi MQTT & pin (edit di sini)
└── README.md

Konfigurasi

Edit config.h sebelum upload:

// WiFi (bisa diset lewat UI LCD langsung)
// MQTT
#define MQTT_SERVER "8dd0d24eadfb4eb0b1e6fd87628f0f4e.s1.eu.hivemq.cloud"
#define MQTT_PORT   8883
#define MQTT_USER   "Edasmart"
#define MQTT_PASS   "KentangBalado1"

Topik MQTT

Publish (ESP32 → Backend)

Topic Nilai Keterangan
edasmart/press/status ON / OFF Status mesin press
edasmart/press/phase TURUN dst Fase gerakan press
edasmart/press/sisa integer detik Sisa waktu tahan
edasmart/giling/status ON / OFF Status mesin penggiling
edasmart/giling/rpm integer RPM penggiling (Hall sensor)
edasmart/giling/sisa integer detik Sisa waktu penggiling
edasmart/estop TRIGGERED / RELEASED Status emergency stop
edasmart/device ONLINE Device menyala (retained)

Subscribe (Backend → ESP32)

Topic Nilai Keterangan
edasmart/cmd/press STOP Hentikan mesin press
edasmart/cmd/giling STOP Hentikan mesin penggiling

Library Arduino yang Dibutuhkan

Install via Arduino Library Manager:

  • PubSubClient by Nick O'Leary
  • LiquidCrystal I2C by Frank de Brabander
  • PCF8574 by Rob Tillaart
  • WiFi (built-in ESP32)
  • Preferences (built-in ESP32)
  • WebServer (built-in ESP32)
  • Update (built-in ESP32)

Pin Mapping

Fungsi Pin ESP32
SDA (I2C) 21
SCL (I2C) 22
ENA (Motor A PWM) 32
ENB (Motor B PWM) 33
IN1 25
IN2 26
IN3 27
IN4 14
RELAY_PRESS 16
RELAY_PENGGILING 17
BUZZER 23
LED BUILTIN 2
HALL SENSOR 34
TRIG HC-SR04 18
ECHO HC-SR04 19

PCF8574 (I2C, addr 0x20):

Fungsi Pin PCF
BTN_OK P1
BTN_BACK P0
BTN_UP P3
BTN_DOWN P2
BTN_ESTOP P6 (NC)
BTN_LS_ATAS P4 (NC)
BTN_LS_BAWAH P5 (NC)

Upload

  1. Buka edasmart_esp32.ino di Arduino IDE
  2. Board: ESP32 Dev Module
  3. Upload speed: 115200
  4. Setelah upload, set WiFi lewat menu Setting → WiFi → Scan WiFi di LCD